Year: 2019, Issue: June

Retinal pigment migration exhibits photic adaptation in the eyes of the butterfly (Pieris brassicae) and moth (Philosamia ricini).
Author:
Sentimenla, Praveen Punj Pankaj and Bendang, Ao
Keyword:
Photoreceptors, Vision, 5-hydroxytryptamine, Cyclic AMP, Colchicine, Pigment granules, Dopamine.
There is radial movement of pigment granules in normal light adapted eyes of both the butterfly (Pieris brassicae) and moth (Philosamia ricini) whereas in the dark adapted state, there is peripheral distribution of the pigment granules. However all parts of retina do not respond equally. Further, treatment with 5-hydroxytryptamine, cyclic AMP and colchicine completely reverses the movement pattern of the pigments exhibiting a migration pattern similar to a light adapted state. This is thought to be due to dopamine release that acts as a secondary messenger in addition to affecting the microtubules. Similarly, the brain of dark adapted insects shows a large accumulation of neurosecretory material in the form of compact granules, whereas light adapted insects show a significant reduction.

Society of Life Sciences

LSB
e - ISSN: 2321-7952
Print ISSN: 0973-5453X
News
Subscriptions
Hard Copy Subscription
Coming Issues
Categories
Animal Science
Agricultural Science
Biotecnology
Microbiology and Virology
Environment
Medical and Forensics
Plant Science
Anatomy and Physiology
Biology
Neuroscience
Ecology
Zoology
1/25
Website Visit Counter
NJLS
e - ISSN: 2321-7960
Print ISSN: 0972-995X